Direct pressure ventilator



Jm 1940- P. w. BARRON DIRECT PRESSURE VENTILATOR Filed Aug. 30, 1937 EMfi/Barraw ATTORNEY WITNESS Patented Jan. 30, 1940 DIRECTPRESSUREVENT-ILATOR Paul Warren Barron, Miami, Fla.

Application August 30,

2 Claims.

This invention relates to ventilators and has for an object to provide adirect wind pressure controlled ventilator adapted to close and preventaccess of rain and wind whenthe wind is blowing in direction to blowinto the ventilator and to open itself again without manual attention. Ii

A further object is to provide a ventilator, having pivoted vanes one ofwhich is adapted to be closed on the windward'side of the ventilatorwhile the other is adapted to remain open on the leeward side of theventilator, the open vane permitting high pressure of the interior tovent out of the building when winds of hurricane strength cause a lowpressure area upon the closed vane.

A further object is to provide a ventilator of this character which willbe composed of a few strong simple and durable parts, which will beinexpensive to manufacture, and which will not easily get out of order.

Withthe above and other objects in view the invention consists ofcertain novel details of construction and combinations of partshereinafter fully described and claimed, it being understood thatvarious modifications may be resorted to within the scope of theappended claims without departing from the-spirit or sacrificing any ofthe advantages of the invention.

In the accompanying drawing forming part of this specification,

Figure 1 is a longitudinal sectional view of the ventilator of the walltype, constructed in accordance with the invention.

Figure 2 is a vertical sectional View of the ventilator taken on theline 2-2 of Figure 1 and looking in the direction of the arrowheads.

Figure 3 is a perspective View of a modified form of wall ventilator.

Figure 4 is a perspective view of another modified form of wallventilator.

Figure 5 is a perspective view of a ventilator adapted to be interposedbetween rafters in building construction.

Figure 6 is a longitudinal sectional view of a roof type of ventilatorhaving vanes adapted to prevent wind and rain entering the ventilatorand at the same time permit venting of high pressure from the building.

Referring now to the drawing in which like characters of referencedesignate similar parts in the various views, l designates a wall havingan opening II for ventilator purposes. A wall ventilator comprising thesubject matter of this invention comprises spaced side walls I 2, a

1937, Serial No. 161,651

short front wall l3, an inclined top wall M sloped upwardly toward thebuilding, thetop wall having a flat extension l terminating at the freeedges of the side walls. The bottom of the ,ventilator is open. The topwall and the side walls as are respectively provided With securingflanges It and il having perforations i8 near the ends to receivesecuring nails L9 or other connectors.

A vane is provided intermediate its ends with a tubular bearing 2!through which a hinge c110 pintle 22 is passed, the ends of the pintlebeing journaled in openings 23 formed in the'sidewalls near theloweredges thereof. The vane is hinged near the upper end and the lower endso that the lower end acts as a weight to normally hold the vane open.The lower edge of the vane is bent at a right angle to'the vane toprovide a flange 24 which also assists in weighting thevane and alsoarrests the wind striking the vane.

The device may be formed of any suitable material, preferably sheetmetal, to withstand rough conditions of service.

In operation when high wind tends to blow rain through the ventilatorinto'the building, a 40 mile per hour wind pressure against the weightedlower end of the vane will force the vane to closed position and preventaccess of rain and wind. When rain is not being driven by the wind thevane will remain open.

In Figure 3 there is shown a modified form of Wall ventilator includingan inverted V-shaped top wall 25, narrow end walls 26, and asubstantially triangular front wall 21 having a narrow oblong portion 28integral with the narrow end walls 26. The top wall is provided withsecuring. flanges 29 and the end walls are provided with securingflanges so which may be secured to the wall adjacent the ventilatingopenings 31 therein. A vane 32 is provided with a weighting bottomflange 33, constructed as above described. The vane is pivotallyconnected to the end walls by hinge pintles 34.

Another modified form of the invention is shown in Figure 4, the sameincluding an arched top and end walls 35 equipped with a perforatedsecuring flange 36. A front' wall 31 is'secured to the top and end wallsand is shaped incontour similar to the contour of the top and end walls.

A vane 38 is provided with a weighting flange 39, and is pivoted to theside walls by a hinge pintle 40. In both modified forms of the inventionabove described, wind pressure against the vanes will close the vanes toprevent entrance of rain and wind through the ventilator into thebuilding.

Another modified form of the invention is shown in Figure 5, the samebeing a substantially oblong casing 4| adapted to be built into thebuilding structure between rafters. The casing is open at one end and atthe open end is provided with perforated securing flanges d2. top of thecasing near the closed end 13 is provided with an opening 44 which iscontrolled by a vane 45 similar in construction to the vanes alreadydescribed and pivoted to the side walls of the casing by a hinge pintle46.

' A roof type of ventilator for use in localities having winds ofcyclonic force is shown in Figure 6. The ventilator comprises asubstantially rectangular casing 41 having securing flanges 48 adaptedto be nailed to a gable roof, as shown at 5B outside of the ventilatingchimney 5! or other structure of the building.

the ventilator are closed by side walls 54 and the end walls 55 of theventilator are provided with inturned flanges 56 which form stops tolimit closing movement of vanes 51 that are pivoted to the side walls bya hinge pintle 58.

The casing 41 is provided at the top with stop flanges 59 which coactwith the stop flanges 56, limiting closing movement of the vanes.

In the event of winds of cyclonic force sweeping over the ventilator thevane on the windward side of the building will be swung closed by windpressure to prevent entrance of the wind and rain into the ventilatingchimney or flue 52. The vane on the leeward side of the building willremain undisturbed so that the high pressure in the building may ventthrough this open vane. On all ventilators the vanes fall back to openor normal position when there is no pressure upon them and they do nothave to be given manual attention.

The ventilator, it will be pointed out, serves as either an inlet or anoutlet.

From the above description it is thought that the construction andoperation of the invention will be fully understood without furtherexplanation.

What is claimed is:

The.

The top 52 of the ventilator is inverted gable in contour. The sidesof 1. A ventilator comprising a casing having side I end and top walls,and being open at the bottom, a pair of normally open vanes pivotedabove the center at the ends of the open bottom of the ventilator andadapted to be disposed outside of a chimney, either vane being adaptedto be swung closed by direct wind pressure while the other vane remainsopen, each vanehaving the lower portion thereof exposed wholly below thebottom I of said walls, -stop flanges on opposite walls or the casinglimiting closing movement of the ing the vanes from each other, saidpartition 3 being adapted to extend downwardly into the chimney todivide the chimney into separate draft channels for directing draftupwardly against said side walls and downwardly past said vanes throughthe open bottom of the ventilator casing.

2. A ventilator comprising a casing having side, end and top walls andbeing open at the bottom, a

pair of pivoted counterbalanced vanes in the ends of the open bottom ofthe ventilator, either vent being adapted to be swung closed by directwind pressure while the other vane remains open, each vane having alower portion thereof extending wholly below the bottom of side walls,flanges on opposite walls of the casing limiting closing movement of thevanes, a central partition extending downwardly from the top wallbetween the side walls and separating the vanes from each other, saidpartition being adapted to extend downward in a chimney and divide thechimney into separate draft channels, spaced walls extending downwardfrom said side walls and spaced from the top wall on opposite sides ofthe partition, said spaced walls being adapted to engage a chimney, andflanges on the upper ends of the last named walls adapted to engage thevanes when closed, the vanes when-closed forming closures for the openbottom of the casing outside thechimney.

PAUL WARREN BARRON.

